The film clapboard is a production slate made of white acrylic and designed to be used with dry erase markers. A cost-effective production tool that's especially useful in sync sound productions--whether video film or dual-system DSLR--the slate comes with standard-size color clapper sticks and has a writing surface of 9.85 x 11.8" (25x30cm). Features: 1. Organic(Acrylic) material and non-wood produced easy to be written or cleaned; 2. Large-size : 9.85 x 11.8" (25x30cm); 3. English version beautiful and stable; 4. Computer-graved and with printings non-lose; 5. Built-in magnetic stripe professional and resonant while being clapped; 6. Clap-strip special design and powerful enough to avoid crack; Specification: Material: Built-in Magnetic strip + Organic(Acrylic) material Dimension: 9.85 x 11.8" (25x30cm) Writing way: Use the high-quality felt pen or Marker pen and erase it asap after usage. Note dont use the greasy pen otherwise it cant be erased. Used for: Film TV plays Studio live Advertisement Videoetc.